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micromechanisms

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
... Abstract This article provides a brief description of the different types of micromechanisms of monotonic and cyclic fracture. General information on the material variables that have the most beneficial effect on resistance to failure is presented. The article discusses the various stages...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003377
EISBN: 978-1-62708-195-5
... coefficients static viscoelastic properties dynamic viscoelastic properties conductivity moisture diffusivity micromechanics WITH INCREASING USE of high-strength and high-stiffness fibers in materials designed to yield a desired set of properties, new interest has arisen in the relationships between...
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Published: 31 December 2017
Fig. 1 Qualitative materials map. Dominating micromechanisms of abrasive wear with respect to material fracture toughness and hardness. MMC, metal-matrix composite; FTC, fused tungsten carbide. Source: Ref 12 More
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Published: 01 January 1996
Fig. 3 Schematics of some possible crack-advance micromechanisms that may occur during cyclic fatigue crack growth in ceramics and ceramic-matrix composites. Source: Advanced Materials & Processes , Aug 1993 More
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Published: 01 January 2002
Fig. 41 Three micromechanisms of fracture in metals. (a) Ductile fracture. (b) Cleavage fracture. (c) Intergranular fracture. Source: Ref 43 More
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Published: 15 January 2021
Fig. 35 Three micromechanisms of fracture in metals. (a) Ductile fracture. (b) Cleavage fracture. (c) Intergranular fracture. Source: Ref 42 More
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Published: 01 January 2001
Fig. 8 Micromechanical model to relate lamina-level strains to constituent-level strains in unidirectional lamina. Shading represents contours of constant J 1 , which is the sum of the three principal strains. Typically, radial strains in the matrix immediately adjacent to the fibers More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003399
EISBN: 978-1-62708-195-5
... Abstract The goal of micromechanics and analysis is to use the predictive methodology to develop tailored composites and also to make accurate predictions of their performance in service. This article reviews results derived from micromechanics analyses, based on finite-element method...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003389
EISBN: 978-1-62708-195-5
... on micromechanics and macromechanics. The article describes the FEA of 3-D solid elements, 2-D cylindrical shell elements, and 1-D beam elements. It contains a table that lists the commercially available finite element codes related to the analysis of fibrous composite materials. The article presents classical...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005418
EISBN: 978-1-62708-196-2
... Abstract Self-consistent models are a particular class of models in continuum micromechanics, that is, the field concerned with making predictions of the properties and evolution of aggregates whose single-crystal deformation behavior is known. This article provides information...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005502
EISBN: 978-1-62708-197-9
... Abstract This article presents the governing equations and methodologies to model the press and sinter powder metallurgy, including continuum, micromechanical, multiparticle, and molecular dynamics approaches. It describes the constitutive relation for compaction and sintering. The article...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... Abstract Mechanical testing is an evaluative tool used by the failure analyst to collect data regarding the macro- and micromechanical properties of the materials being examined. This article provides information on a few important considerations regarding mechanical testing that the failure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
..., polycarbonate, and polypropylene. The article describes the micromechanisms of toughening of plastics and uses a macroscale approach of applying fracture mechanics to the fatigue life prediction of engineering polymers, building on the mechanistic concepts. It also describes the factors affecting fatigue...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003376
EISBN: 978-1-62708-195-5
... composites at two levels: micromechanics and macromechanics. The article “Micromechanics” provides an understanding of the behavior of the fiber and resin constituents and how their combination affects higher level composite behavior. Micromechanics played a significant role in the formative years...
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Published: 30 June 2023
Fig. 1 Physics-based simulation of grain structure used to instantiate a micromechanical crystal-plasticity model. (a) Simulated molten pool temperature profile for selective electron beam melting of Ti-6Al-4V. (b–d) Subsequent solidification grain structure at three sequential time steps More
Image
Published: 30 June 2023
Fig. 5 Representative two-dimensional slices from three-dimensional micromechanical simulations showing the effect of surface roughness on stress distribution near free surfaces. The models were instantiated directly from x-ray microcomputed tomography measurements of laser powder-bed fusion More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003390
EISBN: 978-1-62708-195-5
... and point-stress analysis to micromechanical modeling to shell buckling and other structural considerations. The problem now becomes one of finding a program that meets the user's needs. Evaluation Criteria Criteria for evaluating computer programs for composites structural analysis include database...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... in this article. Stages of the Fatigue Damage Process The advent of microstructure-sensitive micromechanics modeling of cyclic plastic deformation and fatigue processes in the last decade that employ emerging tools in computational materials science and mechanics has opened new horizons for fatigue...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003379
EISBN: 978-1-62708-195-5
... for by standard micromechanical analyses. This German technique is actually a major breakthrough, relying only on identifying the most suitable material for the carrier tube, to ensure that it does not fail first. It can obviously be extended to all biaxial states of strain, permitting systematic verifications...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006988
EISBN: 978-1-62708-439-0
...-looking grain structures but do not actually incorporate the physics of process-driven grain evolution ( Fig. 2 ). Fig. 1 Physics-based simulation of grain structure used to instantiate a micromechanical crystal-plasticity model. (a) Simulated molten pool temperature profile for selective electron...